2014 · Q110
Two layers of a cloth of equal thickness provide warmer covering than a single layer of cloth with double the thickness. Why?
General KnowledgePhysics
- ABecause of the air encapsulated between two layers
- BSince effective thickness of two layers is more
- CFabric of the cloth plays the role
- DWeaving of the cloth plays the role
Explanation
Trapped air between the layers is a poor conductor of heat, adding insulation.